Gen 37:11

“And with these men let us also consider Joseph the chaste, whose honour towards his father and whose love towards his brethren were born of simplicity; for his brethren were envious of him and he perceived it not, they devised murder against him and he knew it not, and when his father told him to go and visit his brethren, he obeyed him readily. He saw dreams which made known his own greatness and their subjection, and in his simplicity he drew nigh and revealed unto them their subjection; the simple man did not perceive that cunning would add to its wickedness, nor that hatred of him would be increased in his brethren by the hearing of these things. And when the old man Jacob saw the simplicity of his son Joseph, he rebuked him and told him not to reveal it, not because he was not certain of what would happen, for the Book saith that he kept all these things because he believed that they were about to take place; but he rebuked the simplicity of Joseph in order that he might not increase the hatred of his brethren by the revealing of his dreams.”

“(1) HIS BROTHERS ENVIED [JPS: WERE WROUGHT UP AT] HIM. In thinking that it was because of his special status with his father that he presumed to tell such things in front of his father. (2) HIS FATHER KEPT. For he thought that the dream would come true, and he wanted and expected that it would be fulfilled, as [the Sages] said (Sanh. 105b), "Of everyone a man is jealous, except his son and disciple."”